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The combination of an applied force and a friction force produces a constant total torque of 35.2 N · m on a wheel rotating about a fixed axis. The applied force acts for 6.10 s. During this time, the angular speed of the wheel increases from 0 to 10.5 rad/s. The applied force is then removed, and the wheel comes to rest in 59.4 s. (a) Find the moment of inertia of the wheel. 1 kg · m2 (b) Find the magnitude of the torque due to friction. 2 N · m (c) Find the total number of revolutions of the wheel during the entire interval of 65.5 s. 3 revolutions
The membrane that surrounds a certain type of living cell has a surface area of 7.4 x 10-9 m2 and a thickness of 1.1 x 10-8 m. how many such ions are present on the outer surface
A uniform cylinder (radius = 10.0 cm) is mounted so as to rotate freely about a horizontal axis that is parallel to and 5.0 cm from the axis of the cylinder, what's the angular speed of the cylinder
How far up the incline will the skier move if the coefficient of kinetic friction between the skies and snow is 0.101
Standing waves on a 1.7m long string that is fixed at both ends are seen at successive frequencies of 36 Hz and 54Hz A) What is the fundamental frequency B) What is the wave speed
On a nice winter day at the South Pole, the temperature rises to ?63°F. What is the approximate temperature in degrees Celsius
Capacitors C1=10\muF and C2=25\muF are each charged to 25V , then disconnected from the battery without changing the charge on the capacitor plates. What is the potential difference across each capacitor
Consider a spider walking from the top of a (stationary) beach ball. (Let that angular position = 0O.), At what angle does this slipping begin
A certain transverse wave is described by y(x,t)=Bcos[2pi(x/L - t/T)], where B= 6.80mm , L= 30.0cm , and T= 3.30×10^-2s. Determine the wave's speed of propagation
A large iron cylinder of mass 265 kg rests so that its circular face rolls along the edge of a table, How far has the system moved along the horizontal
Determine the amplitude and phase of the resultant motion when two sinuosidal motions having the same frequency and traveling in the same direction are combined, if their amplitude are 3.0 com and 4.0 cima they differe in phave by pi/2 radians.
A 690-kg elevator starts from rest and moves upward for 3.50 s with constant acceleration until it reaches its cruising speed, 1.85 m/s. What is the average power of the elevator motor during this period
Guess scale factor of the Universe
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